Improvement in shutter-workers



.H. A.- HOUSE.

7 SHUTTER-WORKER.

PatentedNovQN, 1875.

ATTO RN EYS WITNESSES N- PH'ERS, FHOTO-LH'NOGRAP UNITED STATES PATENT FFICE: A

HENRY A. HOUSE, OF BBIDGEPORT,OONNEGTIGUT.

IMPROVEMENT IN SHUTTER-WORKERS.

Specification forming part of Letters Patent No. 170,17 l, dated November 23, 1875; application filed April 24, 1875.

CASE 3.

of a front view of my device, and Figs. 2 and.

3 are detail views of the same. Fig. 4 is a sectional view,andFig.5 a plan view, of the same.

This invention has relation to improvements in window-blind openers and closers; and the nature of the invention consists in the novel construction and arrangement of devices, substantially as hereinafter described, whereby the openeris adapted to be locked for holding the blind in any desired position, and is likewise adapted to adjust itself automatically to jambs of various thicknesses, as will be hereinafter more fully explained and definitely claimed.

In the annexed drawings, A designates a window-frame set in a wall in the usual wellknownmanner, and B a blind fitting snugly therein, in connection with which I propose to illustrate my improved opener. The upper portion of the blind is secured to the jambs of the frame by the usual wellknown blindhinge R. 0 represents a knuckle of any suitable metal, the shank of which is of considerably larger size than 'isusual, is provided with a screw-thread, t, and is tubular; it also has on its outer end a pin, 1), differing in no respect from those in common use, between which and the screw-thread is cut a slot, at, in a swell or enlargement, b, in which is arranged a beveled gear-wheel, c, rigidly secured upon the end of a rod, F, thesame being of suitable length, and having its other end at ot'prismaticform for a purpose hereinafter explained. D represents a tubular screw-threaded nut, having a broad outwardly-projectin g flange, e, and an inwardly-projecting flange, 0, upon its other end, through which is passed the cylindrical shank f of an operatin g-crank, E, which is tubular, the form of the bore corresponding to that of the prismatic end at of rod F, so that the latter will be received within the former, and will be locked against rotation independent thereof. S represents a helical spring arranged on shank f of crank E, which spring is compressed between flange e of nut'D, and

an annular enlargement, '5 at the base of the shank of crank E, which latter projects a suita ble distance through the said nut, and is held against casual detachment from the same by means of a stop, 19, screwed into the end of the said shank, as shown in figure. The space between stop 19 and the arm of the crank is somewhat greater than the length of nut D, so'that the former has cndwise movement in the latter for the purpose of engaging the' said stop in, and disengaging it from, one of several radial notches, i, cutin the inner edge of the said nut. This nut is adapted to be' screwed into the jamb of a window-crank, arm E serving as a lever for the purpose, when its shank is locked against rotation by the e11- gagement of stop 19 in a notch, t, on the edge of nut D consequently when they latter is forced home, this engagement will hold rod F against rotation in either direction until the said stop is disengaged from the notch of the nut. Gr represents a metallic hinge-plate, consisting of a screw-threaded shank, g, adapted to be screwed into the side rail of a blind, and prevented from undue penetration therein by means of ahead,h, to which a beveled spurred segment, 1', is attached, by means of a neck, j. Segment 2' is braced by a diametrical bar, It, in the center of, the length of which is erected a sleeve, 1, adapted to receive the pin 1) on kntickle'G, after the usual well-known manner of blind-hinges. Hinge-plate G is cast in a single piece of any-suitable metal, and when the blind is mounted in the frame, as shown in Fig. 1, its spurred segment i will engage with beveled pinion 0, so that when the crank is caused to rotate the'latter will cause a horizontally vibratory motion to be communicated to the former, thus opening or shutting the blind, as the case may be. In order to rotate rod F, it is necessary to thrust crank-arm E inward, thus disengaging stop 10 from notch &of the nut or sleeve D, and when the blindhas been either opened or shut to the desired extent, and the crank-arm is released from pressure, the reaction of spring S will force the stop to a re-engagement with a notch in the said sleeve, rigidly locking the 'said rod against further rotation. In this manner the blind is prevented from slamming under any circumstances, and as the slightest engagement of the prismatic end of rod F in the shank f of crank-arm E will suffice to effect a connection thereof, an opening and closing device is produced, which is self-adjusting, and is capable of being used in window-frames of different thicknesses.

What I claim as new, and desire to secure by Letters Patent, 'is

1. In a blind opener and closer the hinge or eye section Gr, having screw-threaded shank g, head h, neck 6 and sleeve 1, in combination with a suitable knuckle or pintle section, substantially as and for the purpose set forth.

2. The combination of the rod F, having prismatic end d, with the endwise -movable and correspondiugly-tubular shank f of crank E, and sleeve or nutD, substantially as specified.

3. The endwise-movable rotating crank-arm sleeve f, adapted to be locked again st rotation, for the purpose of preventing a blind from slamming, substantially as specified.

4. The-rotating rod F, adapted to be passed into the tubular shank of knuckle O, and to be rigidly attached to a beveled pinion, 0, recessed into an enlargement, b, of the said knuckle, substantially as setforth.

5. The combination of the sleeve D, having radial notches t', the shank f of crank E, having stop 19, and spring S, compressed between flanges 0 6 substantially as set forth.

In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.

HENRY A. HOUSE. V. R. O. GIDDINGS,

A, B. BEERS. 

